SALMAN, F.; GH AL–AJRAB, M. Natural fluoride Content of Drinking Water in Two District Areas in Iraq and Yemen (A comparative study). Al-Rafidain Dental Journal, [S. l.], v. 8, n. 1, p. 90–103, 2008. DOI: 10.33899/rdenj.2007.170602. Disponível em: https://rden.uomosul.edu.iq/index.php/rden/article/view/35164. Acesso em: 11 jan. 2026.